SOLR-17725: Rename to LatestVersionMergePolicy

Remove "Filter", which is an implementation detail.

Co-authored-by: Rahul Goswami <rgoswami@commvault.com>

Author: dsmiley

changelog/unreleased/SOLR-17725-Merge-policy-to-upgrade-index-for-compatibility-with-future-Solr-version.yml

@@ -1,5 +1,5 @@
 # See https://github.com/apache/solr/blob/main/dev-docs/changelog.adoc
-title: Merge policy to upgrade index for compatibility with future Solr version
+title: New LatestVersionMergePolicyFactory to upgrade index for compatibility with future Solr version
 type: added
 authors:
   - name: Rahul Goswami

…ndex/LatestVersionFilterMergePolicy.java …solr/index/LatestVersionMergePolicy.javasolr/core/src/java/org/apache/solr/index/LatestVersionFilterMergePolicy.java renamed to solr/core/src/java/org/apache/solr/index/LatestVersionMergePolicy.java solr/core/src/java/org/apache/solr/index/LatestVersionFilterMergePolicy.java renamed to solr/core/src/java/org/apache/solr/index/LatestVersionMergePolicy.java

@@ -33,9 +33,9 @@
  * upgrading to a future Lucene major version if existing documents are reindexed in the current
  * version with this merge policy in place.
  */
-public class LatestVersionFilterMergePolicy extends FilterMergePolicy {
+public class LatestVersionMergePolicy extends FilterMergePolicy {
 
-  public LatestVersionFilterMergePolicy(MergePolicy in) {
+  public LatestVersionMergePolicy(MergePolicy in) {
     super(in);
   }
 

solr/core/src/java/org/apache/solr/index/LatestVersionMergePolicyFactory.java

@@ -22,9 +22,9 @@
 import org.apache.solr.schema.IndexSchema;
 
 /**
- * A {@link MergePolicyFactory} for {@link LatestVersionFilterMergePolicy} objects. The returned
- * LatestVersionFilterMergePolicy instance blocks older version segments (< current version of
- * Lucene) from participating in merges and delegates the merging to a TieredMergePolicy instance by
+ * A {@link MergePolicyFactory} for {@link LatestVersionMergePolicy} objects. The returned
+ * LatestVersionMergePolicy instance blocks older version segments (< current version of Lucene)
+ * from participating in merges and delegates the merging to a TieredMergePolicy instance by
  * default. This can be used to reindex the data and ensure all segments are the latest version
  * segments by the end of the reindexing. This can help prepare the index for upgrade to a later
  * version of Solr/Lucene even if it was initially created on a now unsupported version
@@ -38,6 +38,6 @@ public LatestVersionMergePolicyFactory(
 
   @Override
   protected MergePolicy getMergePolicyInstance() {
-    return new LatestVersionFilterMergePolicy(new TieredMergePolicy());
+    return new LatestVersionMergePolicy(new TieredMergePolicy());
   }
 }